format  Bool PCM_Init (void)
 Input  None
 Output  None
 Function value  TRUE if initialization is successful
  FALSE if initialization fails
 Function  Immediately after starting the program, initialization is performed to use this library.
 Remarks  When using this library, be sure to call this function at the top of the program. 

  format  void PCM_Finish (void)
 Input  None
 Output  None
 Function value  None
 Function  Terminates the PCM library.
 Remarks  Call this function if PCM playback is not performed after that. 

  format  void PCM_DeclareUseAdpcm (void)
 Input  None
 Output  None
 Function value  None
 Function  The function will be expanded to allow ADPCM playback.
 Remarks  Required when playing the specified ADPCM format or CD-ROM XA Audio format. Initialization function
  Please call immediately after several PCM_Init.
  When this is called, the ADPCM extension library module is linked.
 Calling  does not restrict playback functions other than ADPCM.
If you don't call . , the executable file size will be slightly smaller.